Third-hand smoke is a relatively new concept, and researchers are still studying its possible dangers.

三手烟是一个相对较新的概念，研究人员仍然在探索其可能存在的危险。

youdao

Manipulative ability is strong, good at studying, the ability to work is relatively strong, have affinity, team spirit and ability of linking up.

动手能力强，善于学习，工作能力较强，具有亲和力，团队精神和沟通能力。

youdao

But despite the violent behavior witnessed from V1647 and the surrounding disk, the star appears to have been relatively stable since the researchers began studying it in 2004.

MSN: Newborn star's 'heartbeat' seen by X-ray telescopes